Security
9.0
Coldcard Hardware Wallet Flaw Linked to $70 Million Bitcoin Theft in 41 Minutes
A March 2021 firmware integration error in Coldcard hardware wallets routed seed generation to a deterministic software PRNG instead of hardware randomness, enabling attackers to drain 1,196 Bitcoin addresses of 1,082.65 BTC (approximately $70.2 million) in 41 minutes on July 30, 2026.
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